I had the same problem with my dog. It was a big joke with my neighbors because they would all be inside laughing at me chasing around a little dog. I finally got him trained by first taking him out on a long leash and letting him out a little and calling him back, then giving him a treat when he would come. I also let him see me put treats in my coat pocket before we go out so he knows they are there. I kept working with the leash for a couple days letting him go out further and further, then I started taking him out on a leash and letting him go once we were in the backyard. Now all I have to say is come here and he will run right to me. Now he even ignores my neighbors dogs and comes right to me! Now if only I could get it to work on my Lab. I tried the same thing with her and now as soon as we go out she just sits in front of me waiting for her treat!